, or instead, a different kind of mission? and pakistan in particular, the safe havens that are in pakistan, what kind of policy will you have? thank you. >> the mission will be fundamentally different. just to repeat, our main reason , should we have troops in afghanistan post-2014, at the invitation of the afghan government, will be to make sure that we are training, assisting, and advising afghan security forces who have taken the lead and are responsible for security throughout afghanistan and and interest the united states has, the reason we went into first place, is to make sure that al qaeda and its affiliates cannot launch an attack against the united states or other countries from afghanistan. we believe we can achieve that mission in a way that is very different from the very active presence that we have had in afghanistan over the last 11 years. president karzai has emphasized the strains that u.s. troop presence is in afghan villages, for example, has created. that will not be a strain if there is a follow-up operation because that will not be our responsibility. that will be th